Search Publications
Planck 2018 results. VI. Cosmological parameters
Kim, J.; Miville-Deschênes, M. -A.; Boulanger, F. +179 more
We present cosmological parameter results from the final full-mission Planck measurements of the cosmic microwave background (CMB) anisotropies, combining information from the temperature and polarization maps and the lensing reconstruction. Compared to the 2015 results, improved measurements of large-scale polarization allow the reionization opti…
DYNESTY: a dynamic nested sampling package for estimating Bayesian posteriors and evidences
Speagle, Joshua S.
We present DYNESTY, a public, open-source, PYTHON package to estimate Bayesian posteriors and evidences (marginal likelihoods) using the dynamic nested sampling methods developed by Higson et al. By adaptively allocating samples based on posterior structure, dynamic nested sampling has the benefits of Markov chain Monte Carlo (MCMC) algorithms tha…
Planck 2018 results. I. Overview and the cosmological legacy of Planck
Kim, J.; Miville-Deschênes, M. -A.; Boulanger, F. +192 more
The European Space Agency's Planck satellite, which was dedicated to studying the early Universe and its subsequent evolution, was launched on 14 May 2009. It scanned the microwave and submillimetre sky continuously between 12 August 2009 and 23 October 2013, producing deep, high-resolution, all-sky maps in nine frequency bands from 30 to 857 GHz.…
H0LiCOW - XIII. A 2.4 per cent measurement of H0 from lensed quasars: 5.3σ tension between early- and late-Universe probes
Treu, Tommaso; Marshall, Philip J.; Sonnenfeld, Alessandro +23 more
We present a measurement of the Hubble constant (H0) and other cosmological parameters from a joint analysis of six gravitationally lensed quasars with measured time delays. All lenses except the first are analysed blindly with respect to the cosmological parameters. In a flat Λ cold dark matter (ΛCDM) cosmology, we find $H_{0} = 73.3_{…
The Pan-STARRS1 Database and Data Products
Price, P. A.; Rest, A.; Saglia, R. P. +36 more
This paper describes the organization of the database and the catalog data products from the Pan-STARRS1 3π Steradian Survey. The catalog data products are available in the form of an SQL-based relational database from MAST, the Mikulski Archive for Space Telescopes at STScI. The database is described in detail, including the construction of the d…
The Solar Orbiter mission. Science overview
Williams, D.; Livi, S.; Peter, H. +32 more
Aims: Solar Orbiter, the first mission of ESA's Cosmic Vision 2015-2025 programme and a mission of international collaboration between ESA and NASA, will explore the Sun and heliosphere from close up and out of the ecliptic plane. It was launched on 10 February 2020 04:03 UTC from Cape Canaveral and aims to address key questions of solar and …
New physics in light of the H0 tension: An alternative view
Vagnozzi, Sunny
The strong discrepancy between local and early-time (inverse distance ladder) estimates of the Hubble constant H0 could be pointing towards new physics beyond the concordance Λ CDM model. Several attempts to address this tension through new physics rely on extended cosmological models, featuring extra free parameters beyond the six Λ CD…
Painting a portrait of the Galactic disc with its stellar clusters
Castro-Ginard, A.; Jordi, C.; Casamiquela, L. +10 more
Context. The large astrometric and photometric survey performed by the Gaia mission allows for a panoptic view of the Galactic disc and its stellar cluster population. Hundreds of stellar clusters were only discovered after the latest Gaia data release (DR2) and have yet to be characterised.
Aims: Here we make use of the deep and homogeneous …
The Sloan Digital Sky Survey Quasar Catalog: Sixteenth Data Release
Brandt, W. N.; Pâris, Isabelle; Petitjean, Patrick +34 more
We present the final Sloan Digital Sky Survey IV (SDSS-IV) quasar catalog from Data Release 16 of the extended Baryon Oscillation Spectroscopic Survey (eBOSS). This catalog comprises the largest selection of spectroscopically confirmed quasars to date. The full catalog includes two subcatalogs (the current versions are DR16Q_v4 and DR16Q_Superset_…
APOGEE Data and Spectral Analysis from SDSS Data Release 16: Seven Years of Observations Including First Results from APOGEE-South
Bizyaev, Dmitry; Bovy, Jo; Cunha, Katia +20 more
The spectral analysis and data products in Data Release 16 (DR16; 2019 December) from the high-resolution near-infrared Apache Point Observatory Galactic Evolution Experiment (APOGEE)-2/Sloan Digital Sky Survey (SDSS)-IV survey are described. Compared to the previous APOGEE data release (DR14; 2017 July), APOGEE DR16 includes about 200,000 new ste…